Chemistry > AQA > AQA AS CHEMISTRY PAPER74044/ 1/Paper 1 Inorganic and Physical Chemistry QP 2021 (All)

AQA AS CHEMISTRY PAPER74044/ 1/Paper 1 Inorganic and Physical Chemistry QP 2021

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Section A Answer all questions in this section. box 0 1 This question is about atomic structure. 0 1 . 1 Figure 1 is a model proposed by Rutherford to show the structure of an atom. Figure 1 Sta... te two features of the current model that are not shown in the Rutherford model. [2 marks] Feature 1 of the current model Feature 2 of the current model 3 Do not write outside the *03* 2 6 . A sample of tin is analysed in a time of flight mass spectrometer. The sample is ionised by electron impact to form 1+ ions. Table 1 shows data about the four peaks in this spectrum. Table 1 m/z Percentage abundance 112 22.41 114 11.78 117 34.97 120 To be determined Give the symbol, including mass number, of the ion that reaches the detector first. box Calculate the relative atomic mass of tin in this sample. Give your answer to 1 decimal place. [4 marks] [Show More]

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